To add the number of my KR-1 frame to the list: KR250B004846. It has a German-language type plate riveted onto the steering head in addition to the number stamped into the steering head, though I didn't buy the frame in Germany.
My second crankcase set is KR250BE007117. Both my crankcase sets are from the UK.

"Mine is a long and sad tale", said the mouse.
"Indeed it is", said Alice, looking at the mouse's tail.